Final answer:
To add items to a list box, the Add() method of the Items collection of the list box is used, which is the standard in many programming environments.
Step-by-step explanation:
To add items to a list box, you should use b. the Add() method of the Items collection of the list box.
This is the standard method for adding items to a list box in most programming environments, such as .NET languages (C#, VB.NET) and others.
The Items collection represents the set of list items within the list box, and the Add() method is specifically designed to add an individual item to this collection.